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Chloride Active and E-Series UPS User Manual
29
Chapter 12  Display and Operation Elements (E-Series)
The Uninterruptible Power System (UPS) is connected between AC power and the load. It protects the load 
against mains disturbances, especially power failures.
Its operation is based on the on-line principle. The connected load is supplied power through the UPS’s 
inverter. Power disturbances from the mains are suppressed which increases the loads’ operational security 
(PC, network server, multi-user systems etc.) 
In the event of a mains failure, maintenance-free batteries provide an uninterrupted supply of energy. In 
practice, mains failures are of relatively short duration, dependent on the mains quality. Therefore, the UPS’ 
energy is in most cases sufficient to ensure continuous operation of the connected systems, until the mains 
is reestablished. In the event of a longer lasting mains failure it allows for controlled shutdown of connected 
systems.
The UPS indicates by acoustical (buzzer) and optical (LED) alarms that a mains failure has occurred and is 
still persistent. Battery runtimes vary depending upon load, number of batteries and environmental 
conditions. 
The following chart shows the approximate values of the emergency runtime (assuming fully charged 
battery at the onset of the mains failure.)
Load in %
E61
E101
E203
 
OVERLOAD
>105
w/BPE101
 
95-105
9 min
9 min
15 min
 
LOAD
75-95
10 min
10 min
20 min
 
55-75
13 min
13 min
25 min
 
35-55
21 min
21 min
45 min
 
1-35
40 min
40 min
90 min
NOTE: *E-Series Model E203 does not contain internal batteries.
• The actual battery capacity can be read from the LED-”battery” chain (see table below).
Battery Capacity
 
Battery
1 - 35%
 
35 - 55%
 
55 - 75%
 
75 - 95%
 
95 - 100%
The most reliable method for determining actual battery runtime is the application of Chloride MopUPS
®
 
software. With this software, the prospective remaining battery capacity is indicated before and during an 
AC power failure. Furthermore, shutdown procedures can be automated. Depending on the application 
program, operating system and computer hardware, it can be ensured that in the event of a power failure the 
application programs are automatically closed, the subscribers logged in at the server are logged out, the 
data is stored and the operating systems are shut down. For further information please refer to our 
publication about the Chloride ManageUPS™
NET
 SNMP Adapter.
After return of the mains voltage, the UPS automatically initiates a restart. The connected systems are 
restarted according to their specifications.
In the event of overload or internal failure, the load is supplied from the mains via an automatic bypass. As 
soon as the normal status is reestablished, automatic switchover to inverter operation is performed.